Talmud (Rodkinson Edition) — Book 3…
“ Nay; how canst thou compare the paschal lamb to other sacrifices? (Is it not a fact that, if any ordinary sacrifice is offered up not for its originally intended purpose, the sacrifice itself is nevertheless valid, and the man who brings it must only offer up another to carry out his original purpose, while a paschal lamb, if brought for any other but its actual purpose, becomes absolutely useless and cannot be sacrificed at all.) ”
